First of all, it is important to note that when checking the internal or external joint terminals of the welder, it is necessary to turn off the power switch before it can be applied.

1. Test regularly.

2. Since the welder is forced air-cooled, it is easy to inhale dust from the surroundings and accumulate in the machine.

3. Check the wiring parts of the power wiring regularly.

4. In the annual maintenance and inspection, it is necessary to carry out comprehensive repair work such as replacement of defective parts, repair of outer casings, and reinforcement of insulation deterioration parts.